body {
  margin: 0;
  background: #f7f7f4;
  color: #202124;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

main {
  box-sizing: border-box;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.2;
}

h2 {
  margin: 36px 0 8px;
  font-size: 18px;
}

p,
li {
  font-size: 16px;
}

a {
  color: #0066cc;
}

.intro {
  margin-bottom: 32px;
  color: #555;
}

.app-list {
  padding: 0;
  list-style: none;
}

.app-item {
  margin: 0 0 16px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid #dfdfdc;
  border-radius: 8px;
}

.app-item h2 {
  margin-top: 0;
}

.link-list {
  margin: 8px 0 0;
  padding-left: 20px;
}

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #dfdfdc;
  color: #666;
  font-size: 14px;
}